Freewheeling system for tandem axles

Abstract

A freewheeling system for tandem axles, the system including a wheel hub, a wheel hub cover attached to an end of the wheel hub, the wheel hub cover having tines predicted thereon, an actuator chamber, a piston, a sleeve, an axle shaft, and at least one air input. The at least one air input feeding the actuator chamber in which is accommodated the piston that is engaged in the sleeve concentrically mounted in an end of the axle shaft having axial mobility, wherein the sleeve has a flange endowed with tines that mechanically cooperate with the tines predicted on the wheel hub cover.

The invention claimed is: 
     
       1. A freewheeling system for tandem axles, the system comprising:
 a wheel hub; 
 a wheel hub cover attached to an end of the wheel hub, the wheel hub cover having tines predicted thereon; 
 an actuator chamber; 
 a piston; 
 a sleeve; 
 an axle shaft; and 
 at least one air input feeding the actuator chamber in which is accommodated the piston that is engaged in the sleeve concentrically mounted in an end of the axle shaft having axial mobility, wherein said sleeve has a flange endowed with tines that mechanically cooperate with the tines predicted on said wheel hub cover. 
 
     
     
       2. The freewheeling system for tandem axles of  claim 1 , wherein said air input comprises an external configuration, which is adapted together with an auto-calibration system of a vehicles. 
     
     
       3. The freewheeling system for tandem axles of  claim 1 , wherein said air input comprises an internal configuration wherein said wheel hub has an air passage channel, or, in addition, has an internal rotational valve. 
     
     
       4. The freewheeling system for tandem axles of  claim 1 , wherein said piston comprises a return element. 
     
     
       5. The freewheeling system for tandem axles of  claim 4 , wherein said return element is a spring. 
     
     
       6. A vehicle for transportation of goods, the vehicle comprising:
 a plurality of wheels each with a tire thereon; 
 at least an assembly of tandem axles, which is formed by at least two driven axles responsible for supporting the wheels with tires of the vehicle, wherein the assembly of tandem axles include supporting assemblies of the wheels having at least a freewheeling system according to  claim 1 . 
 
     
     
       7. The vehicle for transportation of goods of  claim 6 , wherein the vehicle is a truck, a heavy truck, or a two-axle truck, which are endowed with tandem or tridem axles.